Tom McReynolds clears snow from a neigbors' house in Wichita, Kans.,Thursday, Feb. 21, 2013. Kansas was the epicenter of the winter storm, with parts of Wichita buried under 13 inches of still-falling snow, but winter storm warnings stretched eastern Colorado through Illinois. (AP Photo/The Wichita Eagle, Jaime Greene) less

Tom McReynolds clears snow from a neigbors' house in Wichita, Kans.,Thursday, Feb. 21, 2013. Kansas was the epicenter of the winter storm, with parts of Wichita buried under 13 inches of still-falling snow, but ... more

Photo: Jaime Greene, Associated Press

Tom McReynolds clears snow from a neigbors' house in Wichita,... Photo-4230025.57180 - San Antonio Express-News

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Delaney Schorr, 9, of Fort Collins, uses a push broom to remove snow from her driveway Thursday Feb. 21, 2013, where an over-night storm dropped about two inches on Fort Collins, Colo. Winter storm warnings were issued from eastern Colorado through Illinois. More than a foot of snow was expected in some places; a slippery mix of snow, sleet and freezing rain in others. Schools cancelled classes, sporting events had to reschedule and even lawmakers were staying home. Hundreds of flights were canceled. (AP Photo/The Coloradoan, V. Richard Haro) less

An American Airlines flight arrives as sleet falls at Lambert-St. Louis International Airport, on Thursday, Feb. 21, 2013. Blinding snow, at times accompanied by thunder and lightning, bombarded much of the nation's midsection Thursday. Freezing rain and sleet were forecast for southern Missouri, southern Illinois and Arkansas. St. Louis was expected to get all of the above — a treacherous mix of snow, sleet and freezing rain. (AP Photo/St. Louis Post-Dispatch, Robert Cohen) EDWARDSVILLE INTELLIGENCER OUT; THE ALTON TELEGRAPH OUT less

An American Airlines flight arrives as sleet falls at Lambert-St. Louis International Airport, on Thursday, Feb. 21, 2013. Blinding snow, at times accompanied by thunder and lightning, bombarded much of the ... more

Photo: Robert Cohen, Associated Press

An American Airlines flight arrives as sleet falls at Lambert-St.... Photo-4230012.57180 - San Antonio Express-News

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Chuck Carroll, center, uses a snow blower to clear the sidewalk in front of his business in downtown Salina, Kan. Thursday morning Feb. 21, 2013. Carroll said he had cleared the sidewalk Wednesday night and expected to remove snow at least once more Thursday. (AP Photo/Salina Journal, Tom Dorsey) less

Chuck Carroll, center, uses a snow blower to clear the sidewalk in front of his business in downtown Salina, Kan. Thursday morning Feb. 21, 2013. Carroll said he had cleared the sidewalk Wednesday night and ... more

Motorist attempt to push a car back on the road in Wichita, Kans. Thursday, Feb 21, 2013. Numerous cars and trucks were stuck or off the road as nearly a foot of snow fell across the area. Kansas was the epicenter of the winter storm, with parts of Wichita buried under 13 inches of still-falling snow, but winter storm warnings stretched eastern Colorado through Illinois. (AP Photo/The Wichita Eagle, Bo Rader) less

Motorist attempt to push a car back on the road in Wichita, Kans. Thursday, Feb 21, 2013. Numerous cars and trucks were stuck or off the road as nearly a foot of snow fell across the area. Kansas was the ... more

Photo: Bo Rader, Associated Press

Motorist attempt to push a car back on the road in Wichita, Kans.... Photo-4230030.57180 - San Antonio Express-News

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The exit ramp from east bound Kellogg to I-235 northbound is closed Thursday, Feb. 21, 2013 after a tractor trailer got stuck on the ramp. Numerous cars and trucks were stuck or off the road as nearly a foot of snow fell across the area. Kansas was the epicenter of the winter storm, with parts of Wichita buried under 13 inches of still-falling snow, but winter storm warnings stretched eastern Colorado through Illinois. (AP Photo/The Wichita Eagle, Bo Rader) less

The exit ramp from east bound Kellogg to I-235 northbound is closed Thursday, Feb. 21, 2013 after a tractor trailer got stuck on the ramp. Numerous cars and trucks were stuck or off the road as nearly a foot of ... more

Photo: Bo Rader, Associated Press

The exit ramp from east bound Kellogg to I-235 northbound is closed... Photo-4230029.57180 - San Antonio Express-News

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A Lenexa Police vehicle stops to aid motorists stuck on a ramp to I-35 in Lenexa, Kan., Thursday, Feb. 21, 2013. The Kansas Turnpike Authority encouraged drivers to stay off the turnpike entirely; it runs from Oklahoma to Kansas City. There was virtually zero visibility on the turnpike early Thursday. And I-70 and other major highways in Kansas were snowpacked and icy, according to the Kansas Department of Transportation. Kansas Gov. Sam Brownback closed executive offices, except for essential personnel. He urged residents to have an extra cup of coffee, get out a board game and play with their children. (AP Photo/Orlin Wagner) less

A Lenexa Police vehicle stops to aid motorists stuck on a ramp to I-35 in Lenexa, Kan., Thursday, Feb. 21, 2013. The Kansas Turnpike Authority encouraged drivers to stay off the turnpike entirely; it runs from ... more

A motorcycle is covered in snow on a residential street in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of snow in areas of the state. (AP Photo/Ed Andrieski) less

A motorcycle is covered in snow on a residential street in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot ... more

Photo: Ed Andrieski, Associated Press

A motorcycle is covered in snow on a residential street in Denver... Photo-4230009.57180 - San Antonio Express-News

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Motorist attempt to push a car back on the road in Wichita, Kans. Thursday, Feb 21, 2013. Numerous cars and trucks were stuck or off the road as nearly a foot of snow fell across the area. Kansas was the epicenter of the winter storm, with parts of Wichita buried under 13 inches of still-falling snow, but winter storm warnings stretched eastern Colorado through Illinois. (AP Photo/The Wichita Eagle, Bo Rader) less

Motorist attempt to push a car back on the road in Wichita, Kans. Thursday, Feb 21, 2013. Numerous cars and trucks were stuck or off the road as nearly a foot of snow fell across the area. Kansas was the ... more

Photo: Bo Rader, Associated Press

Motorist attempt to push a car back on the road in Wichita, Kans.... Photo-4230027.57180 - San Antonio Express-News

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A city snow plow pusheds snow off of Zoo Blvd Thursday morning, Feb. 21, 2013 in Wichita, Kans. Kansas was the epicenter of the winter storm, with parts of Wichita buried under 13 inches of still-falling snow, but winter storm warnings stretched eastern Colorado through Illinois. (AP Photo/The Wichita Eagle, Bo Rader) less

A city snow plow pusheds snow off of Zoo Blvd Thursday morning, Feb. 21, 2013 in Wichita, Kans. Kansas was the epicenter of the winter storm, with parts of Wichita buried under 13 inches of still-falling snow, ... more

Steve Berg attacks the snow in his driveway in Wichita, Kan., Thursday morning, Feb. 21, 2013, to stay ahead of the next round that is forecast to fall during the afternoon. Kansas was the epicenter of the winter storm, with parts of Wichita buried under 13 inches of still-falling snow, but winter storm warnings stretched eastern Colorado through Illinois. (AP Photo/The Wichita Eagle, Mike Hutmacher) less

Steve Berg attacks the snow in his driveway in Wichita, Kan., Thursday morning, Feb. 21, 2013, to stay ahead of the next round that is forecast to fall during the afternoon. Kansas was the epicenter of the ... more

Photo: Mike Hutmacher, Associated Press

Steve Berg attacks the snow in his driveway in Wichita, Kan.,... Photo-4230024.57180 - San Antonio Express-News

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Taboola Gallery Frame Item-85307.57180 - San Antonio Express-News

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A Sedgwick County Sheriff's deputy helps a stranded motorist in Wichita, Kans. Thursday, Feb 21, 2013, as nearly a foot of snow covered the area. Kansas was the epicenter of the winter storm, with parts of Wichita buried under 13 inches of still-falling snow, but winter storm warnings stretched eastern Colorado through Illinois. (AP Photo/The Wichita Eagle, Bo Rader) less

A Sedgwick County Sheriff's deputy helps a stranded motorist in Wichita, Kans. Thursday, Feb 21, 2013, as nearly a foot of snow covered the area. Kansas was the epicenter of the winter storm, with parts of ... more

A pedestrian walks along the sidewalk in the Country Club Plaza shopping district in Kansas City, Mo., Thursday, Feb. 21, 2013. The Missouri Department of Transportation said Interstate 44 near Springfield was completely covered with ice Thursday morning. Traffic was moving very slow and the DOT urged drivers to use extreme caution or stay home. St. Louis-area road crews were out in full force early Thursday, even though it was dry. The region was expecting a volatile mix of snow, sleet, ice and freezing rain by midday and crews were hoping to lay down enough salt to keep at least the major roadways moving. (AP Photo/Orlin Wagner) less

A pedestrian walks along the sidewalk in the Country Club Plaza shopping district in Kansas City, Mo., Thursday, Feb. 21, 2013. The Missouri Department of Transportation said Interstate 44 near Springfield was ... more

Photo: Orlin Wagner, Associated Press

A pedestrian walks along the sidewalk in the Country Club Plaza... Photo-4230023.57180 - San Antonio Express-News

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Porter McKinnon cross country skis in Washington Park in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of snow in areas of the state. (AP Photo/Ed Andrieski) less

Porter McKinnon cross country skis in Washington Park in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of ... more

A trucker stops in almost whiteout conditions along K-10 highway near Eudora, Kan., Thursday, Feb. 21, 2013. The Kansas Turnpike Authority encouraged drivers to stay off the turnpike entirely; it runs from Oklahoma to Kansas City. There was virtually zero visibility on the turnpike early Thursday. And I-70 and other major highways in Kansas were snowpacked and icy, according to the Kansas Department of Transportation. Kansas Gov. Sam Brownback closed executive offices, except for essential personnel. He urged residents to have an extra cup of coffee, get out a board game and play with their children. (AP Photo/Orlin Wagner) less

A trucker stops in almost whiteout conditions along K-10 highway near Eudora, Kan., Thursday, Feb. 21, 2013. The Kansas Turnpike Authority encouraged drivers to stay off the turnpike entirely; it runs from ... more

Photo: Orlin Wagner, Associated Press

A trucker stops in almost whiteout conditions along K-10 highway... Photo-4230014.57180 - San Antonio Express-News

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Taboola Gallery Frame Item-85307.57180 - San Antonio Express-News

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Kay Nelson scrapes ice and snow from her vehicle in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of snow in areas of the state. (AP Photo/Ed Andrieski) less

Kay Nelson scrapes ice and snow from her vehicle in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of snow ... more

Lia Cervantes walks her dog Ruby in the snow in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of snow in areas of the state. (AP Photo/Ed Andrieski) less

Lia Cervantes walks her dog Ruby in the snow in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of snow in ... more

Photo: Ed Andrieski, Associated Press

Lia Cervantes walks her dog Ruby in the snow in Denver on Thursday,... Photo-4230011.57180 - San Antonio Express-News

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Kyle Kovalik shoves snow from his walk in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of snow in areas of the state. (AP Photo/Ed Andrieski) less

Kyle Kovalik shoves snow from his walk in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of snow in areas ... more

Porter McKinnon cross country skis in Washington Park in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of snow in areas of the state. (AP Photo/Ed Andrieski) less

Porter McKinnon cross country skis in Washington Park in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of ... more

Hector Valdez rides his bike through the snow in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of snow in areas of the state. (AP Photo/Ed Andrieski) less

Hector Valdez rides his bike through the snow in Denver on Thursday, Feb. 21, 2013. A fast moving winter storm passed through Colorado Wednesday night and Thursday morning dropping as much as a foot of snow in ... more

Photo: Ed Andrieski, Associated Press

Hector Valdez rides his bike through the snow in Denver on... Photo-4230046.57180 - San Antonio Express-News

One of many vehicles that slid off I-25 in iicy conditions south of Colorado Springs Colo. waits for rescue as a plow goes by, Thursday, Feb. 21, 2013. Winter storm warnings were issued from eastern Colorado through Illinois Thursday. (AP Photo/The Colorado Springs Gazette, Mark Reis) NO MAGS NO SALES less

One of many vehicles that slid off I-25 in iicy conditions south of Colorado Springs Colo. waits for rescue as a plow goes by, Thursday, Feb. 21, 2013. Winter storm warnings were issued from eastern Colorado ... more

Photo: Mark Reis, Associated Press

One of many vehicles that slid off I-25 in iicy conditions south of... Photo-4230044.57180 - San Antonio Express-News

Plows try to clear Shawnee Mission Parkway in the Kansas City suburb of Shawnee Mission, Kan., Thursday, Feb. 21, 2013. The Kansas Turnpike Authority encouraged drivers to stay off the turnpike entirely; it runs from Oklahoma to Kansas City. There was virtually zero visibility on the turnpike early Thursday. And I-70 and other major highways in Kansas were snowpacked and icy, according to the Kansas Department of Transportation. Kansas Gov. Sam Brownback closed executive offices, except for essential personnel. He urged residents to have an extra cup of coffee, get out a board game and play with their children. (AP Photo/Orlin Wagner) less

Plows try to clear Shawnee Mission Parkway in the Kansas City suburb of Shawnee Mission, Kan., Thursday, Feb. 21, 2013. The Kansas Turnpike Authority encouraged drivers to stay off the turnpike entirely; it ... more

A plow tries to clear K-10 highway near DeSoto, Kan., Thursday, Feb. 21, 2013. The Kansas Turnpike Authority encouraged drivers to stay off the turnpike entirely; it runs from Oklahoma to Kansas City. There was virtually zero visibility on the turnpike early Thursday. And I-70 and other major highways in Kansas were snowpacked and icy, according to the Kansas Department of Transportation. Kansas Gov. Sam Brownback closed executive offices, except for essential personnel. He urged residents to have an extra cup of coffee, get out a board game and play with their children. (AP Photo/Orlin Wagner) less

A plow tries to clear K-10 highway near DeSoto, Kan., Thursday, Feb. 21, 2013. The Kansas Turnpike Authority encouraged drivers to stay off the turnpike entirely; it runs from Oklahoma to Kansas City. There was ... more

Workers clear the sidewalk on the Country Club Plaza shopping district in Kansas City, Mo., Thursday, Feb. 21, 2013. The Missouri Department of Transportation said Interstate 44 near Springfield was completely covered with ice Thursday morning. Traffic was moving very slow and the DOT urged drivers to use extreme caution or stay home. St. Louis-area road crews were out in full force early Thursday, even though it was dry. The region was expecting a volatile mix of snow, sleet, ice and freezing rain by midday and crews were hoping to lay down enough salt to keep at least the major roadways moving. (AP Photo/Orlin Wagner) less

Workers clear the sidewalk on the Country Club Plaza shopping district in Kansas City, Mo., Thursday, Feb. 21, 2013. The Missouri Department of Transportation said Interstate 44 near Springfield was completely ... more

Photo: Orlin Wagner, Associated Press

Workers clear the sidewalk on the Country Club Plaza shopping... Photo-4230036.57180 - San Antonio Express-News

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A pedestrian crosses the street near the Country Club Plaza shopping district Kansas City, Mo., Thursday, Feb. 21, 2013. The Missouri Department of Transportation said Interstate 44 near Springfield was completely covered with ice Thursday morning. Traffic was moving very slow and the DOT urged drivers to use extreme caution or stay home. St. Louis-area road crews were out in full force early Thursday, even though it was dry. The region was expecting a volatile mix of snow, sleet, ice and freezing rain by midday and crews were hoping to lay down enough salt to keep at least the major roadways moving. (AP Photo/Orlin Wagner) less

A pedestrian crosses the street near the Country Club Plaza shopping district Kansas City, Mo., Thursday, Feb. 21, 2013. The Missouri Department of Transportation said Interstate 44 near Springfield was ... more

Photo: Orlin Wagner, Associated Press

A pedestrian crosses the street near the Country Club Plaza... Photo-4230037.57180 - San Antonio Express-News

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John Potyondy of Fort Collins, Colo. uses his snow blower to remove snow from his side walk Thursday Feb. 21, 2013, where an over-night storm dropped about two inches on Fort Collins. Winter storm warnings were issued from eastern Colorado through Illinois. More than a foot of snow was expected in some places; a slippery mix of snow, sleet and freezing rain in others. Schools cancelled classes, sporting events had to reschedule and even lawmakers were staying home. Hundreds of flights were canceled. (AP Photo/The Coloradoan, V. Richard Haro) less

John Potyondy of Fort Collins, Colo. uses his snow blower to remove snow from his side walk Thursday Feb. 21, 2013, where an over-night storm dropped about two inches on Fort Collins. Winter storm warnings ... more

Drivers get out of their vehicles after a ramp is blocked by truck stuck in snow along I-35 in the Kansas City suburb of Overland Park, Kan., Thursday, Feb. 21, 2013. The Kansas Turnpike Authority encouraged drivers to stay off the turnpike entirely; it runs from Oklahoma to Kansas City. There was virtually zero visibility on the turnpike early Thursday. And I-70 and other major highways in Kansas were snowpacked and icy, according to the Kansas Department of Transportation. Kansas Gov. Sam Brownback closed executive offices, except for essential personnel. He urged residents to have an extra cup of coffee, get out a board game and play with their children. (AP Photo/Orlin Wagner) less

Drivers get out of their vehicles after a ramp is blocked by truck stuck in snow along I-35 in the Kansas City suburb of Overland Park, Kan., Thursday, Feb. 21, 2013. The Kansas Turnpike Authority encouraged ... more

Photo: Orlin Wagner, Associated Press

Drivers get out of their vehicles after a ramp is blocked by truck... Photo-4230035.57180 - San Antonio Express-News